A coupled RELAPS-3D/CFD methodology with a proof-of-principle calculation

Aumiller, D.L. ; Tomlinson, E.T. ; Bauer, R.C.

Bettis Atomic Power Laboratory

关键词: Thermodynamics;    Computer Codes;    99 General And Miscellaneous//Mathematics, Computing, And Information Science;    Boundary Conditions;    Blowdown;   

DOI  :  10.2172/770646
RP-ID  :  B-T-3268
RP-ID  :  AC11-98PN38206
RP-ID  :  770646

美国|英语

来源: UNT Digital Library

【 摘 要 】

The RELAP5-3D computer code was modified to make the explicit coupling capability in the code fully functional. As a test of the modified code, a coupled RELAP5/RELAP5 analysis of the Edwards-O'Brien blowdown problem was performed which showed no significant deviations from the standard RELAP5-3D predictions. In addition, a multiphase Computational Fluid Dynamics (CFD) code was modified to permit explicit coupling to RELAP5-3D. Several calculations were performed with this code. The first analysis used the experimental pressure history from a point just upstream of the break as a boundary condition. This analysis showed that a multiphase CFD code could calculate the thermodynamic and hydrodynamic conditions during a rapid blowdown transient. Finally, a coupled RELAP5/CFD analysis was performed. The results are presented in this paper.